baber/WOPTO huggingface dataset:
Patent GB-1092379-A (GB)
Title: Building partitions
IPC: E04B2/74
Filed: 1965-01-08
Abstract: 1,092,379. Partitions. C. ZWICKERT. Jan. 8, 1965 [Jan. 17,1964; June 4, 1964], No. 978/65. Heading E1W. A partition is built up from one or more panels, e.g. 26, surrounded by external framing members 25 and 32 each with six longitudinal webs thereon forming a central groove used to locate, e.g., a panel projection 26a, and lateral grooves which each locate one longitudinal edge of a strip, e.g. 35, used to cover the panel-external framing member joint, opposed strips being wedged apart by the panel. vertical posts 31, 28, and horizontal beams (not shown), form intermediate framing members, (which may also take other forms), and have end 29, and lateral, 34. screw jacks fixed thereto to push the external framing members outwardly. (The panels may also have such Sacks fixed thereto, (Fig. 2, not shown.)) Mineral wool packing 42 is employed along the vertical and upper horizontal edges and electric cables 39, 40 may be located behind the edge strips. Strips of cushioning material may be arranged on the outside of the external framing members, and in upper, internal longitudinal grooves in the edge strips. The external framing members may be used to form a door frame in the partition, with the aid of channelsectioned strips 56 and 57, (Fig. 6, not shown), fixed thereto.
Patent GB-1055511-A (GB)
Title: Process for the production of polyurethane plastics
Inventor: DIETERICH DIETER
IPC: C08G18/38
Filed: 1965-01-08
Abstract: A mixture of 9 g. 1:4-butanediol, 4 g. of 2 chloroethanol and 4.4 g. of dimethylamine-ethanol is heated to 140 DEG  C., quaternization taking place in an exothermic reaction.ALSO:A polyurethane plastic containing quaternary nitrogen atoms is produced by reacting an organic polyisocyanate with a quaternizing monohydric alcohol substituted by a halogen atom or by a sulphonic or sulphuric acid ester group and with a quaternizable monohydric alcohol substituted by a tertiary amino group. In a modification the two monohydric alcohols may be initially reacted with each other and the adduct then reacted with the polyisocyanate. The quaternizing monohydric alcohol may be: b -chloroethanol, b -bromoethanol, d -bromopropanol, 6-bromohexanol, 2-bromohexanol, 3-chlorobutanol, ethylene glycol monobenzene sulphonate, 1,3-dichloro-2-propanol, 1,3 - dibromo - 2 - propanol, 2,2 - bis - chloromethyl propanol, pentaerythritol tris-chlorohydrin, pentaerythritol tris - bromhydrin, 4-chloromethyl cyclohexanol - 1, 4 - chloromethyl hydroxyethyl phenol ether, pentaerythritol - tris - ethane sulphonate and glycerine bis-toluenesulphonate.  The quaternizable monohydric alcohol may be; dimethylamino-ethanol, diethylamino-ethanol, dibutylamino-ethanol, N - methyl - N - butylamino ethanol, piperidino - ethanol, morpholino - ethanol, dimethylamino - propanol, dimethylamino-butanol, 1,6 - bis - dimethylamino - 2 - hexanol, 1,3 - diethylamino - 2 - propanol, and 2,2 - bis-dimethylamino - methyl - propanol, polyesters, polyethers, polyacetals and low M.W. compounds containing active hydrogen may be included in the reaction mixture.  The polyisocyanate may be aliphatic, cycloaliphatic or aromatic.  In Example (1) ethylene bromhydrin and dimethylamino-ethanol were added to a polyester of adipic acid, hexane diol and 2,2-dimethylpropane diol-1,3 and the mixture heated to 120 DEG C.  Diphenylmethane-4,41-diisocyanate was added and a rubber was formed which was vulcanized with carbon black and dicumyl peroxide.  In Example (3) hexamethylene diisocyanate was reacted with the adduct of 1,4-butanediol, 2-chloroethanol and dimethylamino-ethanol.  In Example (4) ethylene bromohydrin and 1,6-hexane diisocyanate were added to polyethylene glycol adipate, allowed to react and then dimethylamino-ethanol added.
Patent HU-T50841-A (HU)
Title: Process for producing (cycloalkylamino)-methylene-bis(phosphoric acid) derivatives and pharmaceutical compositions comprising such compounds as active ingredient
Inventor: ISOMURA YASUO
IPC: A61K31/66
Filed: 1989-01-20
Abstract: (Cycloalkylamino)methylenebisphosphonic acids and esters (I) and salts thereof <CHEM> (wherein R, R<1>, R<2>, R<3> and R<4> are hydrogen or lower alkyl and n is an integer from 3 to 10) are bone-resorption inhibitor and anti-arthritic agents.
Patent JP-H05320880-A (JP)
Title: Vacuum deposition device
Inventor: YONAGO AKINOBU
IPC: C23C14/24
Filed: 1992-01-06
Abstract: PURPOSE:To fit a vapor sealing vessel and a water-cooled plate to separate trestles in a vacuum deposition device and to relieve labor required to carry out the cleaning and maintenance of the interior of the vessel. CONSTITUTION:A vapor sealing vessel 2 and a crucible 6 are disposed on a trestle 12 in the vacuum vessel 1 of a vacuum deposition device and a water- cooled plate 10 is fitted to trestles 14 positioned at both sides of the trestle 12. The trestles 12, 14 are separately supported by rails 17, 18 in a freely movable state. The cleaning and maintenance of the interior of the vacuum deposition device can be carried out without detaching the water-cooled plate 10.
Patent JP-S5283734-A (JP)
Title: Gamma-lactone derivatives and preparation thereof
Inventor: MORI FUMIO
IPC: C07D307/33
Filed: 1976-01-01
Abstract: PURPOSE: ϒ-Lactone derivatives expressed by the formula I: [R 1 , R 2  and R 3  are H, alkyl, phenyl; A is -CH 2 -CX 3 , -CH=CX 2  (X is halogen)]. For example, 3,3-dimethyl-4-(2',2'-dichlorovinyl)-4-butanolide. 
     COPYRIGHT: (C)1977,JPO&Japio
Patent JP-H10193265-A (JP)
Title: Polishing device
Inventor: KAMEI HIROMASA
IPC: B24C3/16
Filed: 1997-01-07
Abstract: PROBLEM TO BE SOLVED: To polish an internal peripheral surface of a pipe-shaped unit of turbine rotor or the like in a short time, so that also an inner surface of pipe- shaped unit of small internal diameter can be polished. SOLUTION: In this device, from a blast tank 11 to a polishing head 2, a shot particle is fed, from a circumferential nozzle 14 provided in this polishing head 2, the shot particle is injected to an internal peripheral surface 26 of a rotor main unit 1, also this injected shot particle is collected by a shot collector 12 through a collecting head 7 provided with a collecting nozzle 17. The polishing head 2 and the collecting head 7 are constituted so as to move in an axial direction of the rotor main unit 1 by winding a wire rope 4 with a winch 5 in the outside.
Patent JP-S58117848-A (JP)
Title: High strength cast ni alloy showing superior corrosion and oxidation resistance at high temperature in combustion atmosphere
Inventor: YABUKI TATSUMORI
IPC: C22C30/00
Filed: 1982-01-06
Abstract: PURPOSE:To reduce the cost of the resulting titled alloy by providing a specified composition consisting of C, Si, Mn, Cr, Fe, W, Mo, Co, Ti, Al and the balance essentially Ni. CONSTITUTION:This inexpensive cast Ni alloy showing superior strength at high temp. and superior corrosion and oxidation resistances at high temp. in a combustion atmosphere has a composition consisting of, by weight, 0.55-2.0% C, 0.1-3.0% Si, 0.1-2.0% Mn, 10-<28% Cr, 3-30% Fe, 0.5-9.0% W, 0.5-8.0% Mo, 1-8% Co, 0.01-3.5% Ti, 0.01-3.5% Al and the balance essentially Ni or further contg. one or more among 0.005-0.2% N, 0.01-1.50% Nb, 0.01-1.50% Ta, 0.001-0.20% B and 0.001-0.20% Zr.
Patent JP-H08188024-A (JP)
Title: Suspension fixing structure
Inventor: KATO YOSHIHISA
IPC: F16F9/54
Filed: 1995-01-06
Abstract: PURPOSE: To prevent looseness of bolts from nuts to be used in fixing, concerning a suspension fixing structure suitable for a structure for fixing a vehicular suspension to a body. CONSTITUTION: An upper support 22 for fixing a piston rod 10 of a shock absorber to a body side member 20 is constituted of rotary bearings 16 for gripping the piston rod 10, an elastic body 28, and first and second supporting members 30, 32. Fixing of the piston rod 10 is performed by using bolts 34 and nuts 36 in a state where the body side member 20 is pinched by the first and second supporting members 30, 32.
Patent JP-H07208020-A (JP)
Title: Door glass lifting gear for car
Inventor: NAKAMU HARUHIRO
IPC: E05F15/00
Filed: 1994-01-10
Abstract: PURPOSE:To inhibit both the quantity of initial Iooseness and the quantity of looseness increased at small values. CONSTITUTION:An upper end is most narrowed in the groove section 26 of an upper-side guide section 24 and a lower end is most narrowed in the groove section 27 of a lower-side guide section 25, and a guide flange 23 for a guide rail 21 is engaged with the narrowest sections of the upper and lower groove sections 26, 27 without clearances. Contact surfaces with the guide flange 23 in the vicinity of the narrowest sections of each groove section 26, 27 are. formed in curved projecting surfaces in a plan view.
Patent JP-H11192442-A (JP)
Title: Air purifier
Inventor: MURAGAKI MASAHITO
IPC: B03C3/41
Filed: 1998-01-06
Abstract: PROBLEM TO BE SOLVED: To simplify structure and to enable assembling at low cost and with good workability by performing power supply to an ionization device and a repulsing plate through the same electrode part. SOLUTION: Since an ionization device 3 cannot be fitted without inserting a first negating part and a second engaging part of a fitting part 20 so that the first engaging part and the second engaging part are engaged with a first engaging recessed part and a second engaging recessed part, respectively, the fitting direction is not mistaken. A plus electrode part 23a and a minus electrode part 23b projected from a notch part of a body case 6 is pushed in by a first metal plate, thereby electric connection is enabled. Therefore, plus voltage is applied to ionization rays and to a repulsing plate 4 of the ionization device 3 from the same power source. On the other hand, a first contact part of the minus electrode part 23b projected from the notch part of th body case 6 is pushed in by a second metal plate, thereby electric connection is enabled.  In this way, minus voltage is applied to a flat plate electrode of the ionization device 3 from a power source.
Patent JP-H06345851-A (JP)
Title: Heat stabilizer for halogen-containing polymer
Inventor: OTSUKA YOSHIHIRO
IPC: C08L27/00
Filed: 1994-01-10
Abstract: PURPOSE:To produce the subject heat stabilizer composed of a specified epoxy- modified block copolymer, excellent in prolongation of service life of a molding machine, exhibiting an excellent moldability, capable of producing a molding excellent in surface properties and flexibility and useful for production of a film, a leather, a water-proofing agent, etc. CONSTITUTION:This heat stabilizer is composed of an epoxy-modified block copolymer synthesized by epoxidizing double bonds of a diene compound in a block copolymer containing (A) a polymer block composed mainly of an aromatic vinyl compound and (B) a polymer block composed mainly of a conjugated diene compound. In addition, in the case the heat stabilizer is added to a halogen-containing polymer, the ratio of the epoxy-modified block copolymer is 0.1 to 10wt.%, preferably 1 to 5wt.% based on the halogen-containing polymer.
Patent PH-19940-A (PH)
Title: Purine derivatives,pharmaceutical compositions containing same and method of use thereof
Inventor: SCHAEFFER HOWARD JOHN
IPC: C07D473/18
Filed: 1982-08-10
Abstract: Compounds of the general formula <CHEM> (wherein R is a hydroxy or amino group and X is an oxygen or sulphur atom) and their physiologically acceptable salts and esters have been known to have antiviral activity particularly against herpes viruses. Processes for preparing such compounds are described as well as pharmaceutical and veterinary compositions containing these compounds.
Patent PH-20447-A (PH)
Title: Apparatus for hair removal
Inventor: DAAR YAIR
IPC: A45D26/00
Filed: 1983-08-08
Abstract: An electrically powered depilatory device including a hand held portable housing (2), motor apparatus (4, 4 min ) disposed in the housing, and a helical spring (24) comprising a plurality of adjacent windings arranged to be driven by the motor apparatus (4, 4 min ) in rotational sliding motion relative to skin (5) bearing hair to be removed, the helical spring (24) including an arcuate hair engaging portion arranged to define a convex side whereat the windings are spread apart, and a concave side corresponding thereto whereat the windings are pressed together, the rotational motion of the helical spring (24) producing continuous motion of the windings from a spread apart orientation at the convex side to a pressed together orientation at the concave side and for engagement and plucking of hair from the skin (5), whereby the surface velocities of the windings relative to the skin (5) greatly exceed the surface velocity of the housing relative thereto.
Patent PH-32015-A (PH)
IPC: C04B28/02
Filed: 1995-01-20
Abstract: The invention relates to a cement composition containing a shrinkage reducing amount of an alkyl ether derivative of an aliphatic polyhydroxy compound of the formula: Q-[(A)n-OR]x wherein Q is a C3-C12 aliphatic hydrocarbon group (preferably glyceryl), R is hydrogen or C1-C10 alkyl, at least one R being the C1-C10 alkyl group, A is C2-C4 oxyalkylene, n is 0-10, and x is 3-5.
Patent TR-26050-A (TR)
IPC: H03L7/093
Filed: 1991-03-26
Abstract: A first phase locked loop (12) generates a first timing signal (on 17) at a first horizontal synchronizing frequency (1fH) corresponding to a horizontal synchronizing component (on 13) in a video signal (on 11). A converter circuit (56) derives from the first timing signal (on 17) a second timing signal (on 61), having a second frequency (2fH) at a multiple of the first frequency and subject to a variation in frequency at a rate corresponding to the first frequency. A second phase locked loop (62) receives the second timing signal (on 61), which can be asymmetric within the period of the first timing signal (on 17), and a feedback signal (on 73) in accordance with the second frequency, and includes a controllable oscillator (66) for generating a smooth horizontal synchronizing signal (on 67) at the second frequency. The second phase locked loop has a characteristic loop response, determined by a low pass filter (63), preventing the voltage controlled oscillator (66) from changing frequency as fast as the rate of variation of the second timing signal (on 61). This drives the error signal for the controllable oscillator (66) toward an average value, resulting in a corrected, symmetric synchronizing signal at the second frequency. A horizontal output deflection stage (68) may be coupled to the second phase locked loop (62) for synchronized horizontal scanning in accordance with the second frequency. No additional signal processing circuitry is needed to correct the symmetry of the first timing signal generated by the first phase locked loop or the symmetry of the second timing signal derived by the converter. <IMAGE>
Patent UY-31883-A (UY)
Title: Nuevo procedimiento de síntesis de 7,8-dimetoxi-1, 3-dihidro-2h-3-benzazepin-2-ona, y aplicación en la síntesis de ivabradina y de sus sales de adición a un ácido farmacéuticamente aceptable
Inventor: LERESTIF JEAN-MICHEL
IPC: A61P9/00
Filed: 2009-06-09
Abstract: Procedimiento de síntesis del compuesto de fórmula (I): Aplicación en la síntesis de ivabradina, de sus sales de adición a un ácido farmacéuticamente aceptable y de sus hidratos.
Patent UY-34238-A (UY)
Inventor: PEAN JEAN-MANUEL
IPC: A61K9/28
Filed: 2012-08-02
Abstract: Escanear formula I de pagina 5/22 del SGDD
Patent YU-32195-A (YU)
Inventor: JOVAN JOVANOVIC
Filed: 1995-05-19
Abstract: Dečji bicikl sa konjićem sastoji se iz kostura (1) koji ima pomoćne točkiće (5) na obema stranama zadnjeg točka (4) i na kome su učvršćene dve bočne polutke (31a) konjića tako da glava (31) stoji ispred upravljača. Prednje noge (34) povezane su sa kracima viljuške (35a) prednjeg točka (3) i pomoću osovinice (35) sa telom. Zadnje noge (41) leže na bočnim stranama osovine (26) zadnjeg točka (4) i medjusobno su povezane osovinom (42) i imaju ugradjen rep (45). Na osovini (26) zadnjeg točka (4) smešten je ekscentar (24) i povezan sa polugom (25) koja je povezana sa osovinom (21) cevi (19) nosača sedišta, pri čemu je cev (19) pokretno uglavljena u nosač (20) koji je povezan sa polugom (27) za dizanje upravljača. Poluga (27) nosi udaraljku (9) za ritmično udaranje na zvučnu kutiju (18) radi imitiranja konjskog galopa. Preko klizača (15) omogućeno je pomeranje cevi (13) upravljačkih ručica (47) napred-nazad. Obrtanjem pedala (2) obrće se ekscentar (24) i stvara se poskakivanje konjića pri čemu se vožnja bicikla odvija normalno.
Patent YU-56284-A (YU)
Title: Pneumatsko membranski elektromagnetski ventil
Inventor: IVO SMRDELJ
Filed: 1984-03-28
Abstract: Pneumatsko membranski elektromagnetski ventil, prema predloženom rešenju sadrži tijelo ventila (1) izvedeno u obliku dva okomita valja. Poklopac ventila (2) a izmedju tijela ventila (1) i poklopca ventila (2) smeštena je membrana (5) sa rupicom (5) za izjednačavanje tlaka. Odnos prečnika rupice (5) na membranni (5) i prečnika otvora sapnice (3) je 1 prema 3.
Patent YU-95889-A (YU)
Title: Grejač sa multiemulzionim kontaktnim grejnim telom i postupak za njegovo dobijanje
Inventor: MIROSLAV DJORDJEVIC
Filed: 1989-05-09
Abstract: GREJAČ SA MULTIEMULZIONIM KONTAKTNIM GREJNIM TELOM I POSTUPAK ZA NJEGOVO DOBIJANJE, grejač sa multiemulzuionim elektrootpornim slojem na nemetalnoj ploči, ima za novost to, što je na gornju površinu 4 noseće elektroizolacione nemetalne ploče 1, do blizu obodnih ivica ploče 1 nanet elektrootporni multiemulzioni sloj 2, na čija su dva suproma kraja pričvršćene srebrne elektrokontaktne ploče 3, što je na grejni multiemulzioni sloj 2 i elektrokontaktne ploče 3 nanet elektroizolacioni sloj 5 sa vodoizolacionim slojem 6. Ovakvi elektrootporni grjači ugradjuju se na zidove, tavanicu ili u pod. Njihova spoljna površina može biti izlepljena tapetima, pločicama, parketom ili se dekorisati na drugi način.
Patent YU-98883-A (YU)
Title: Postupak za pripravu "iva" noćne kreme za sve tipove kože
Filed: 1983-05-04
Abstract: POSTUPAK ZA PRIPRAVU "IVA" NOĆNE KREME ZA SVE TIPOVE KOŽE, korišćenjem točno odredjenih omjera kozmetičkih sirovina i primjenom optimalnog tehnološkog postupka, može se pripraviti stabilna emulzija, koja kao aktivne tvari sadrži pčelinji vosak, propolis i matičnu mliječ, a proizvod ima svojstva da njeguje i regenerira kožu lica. Prednost ovog postupka je u tome, što se njegovom primjenom dolazi do stabilne emulzije, u kojoj pčelinji vosak bogat vitaminom A, omogućuje lakšu apsorpciju proizvoda u kožu, propolis djeluje adstrigentno i antimikrobno, a matična mliječ vrši regeneraciju kože kojoj donosi aminokiseline, proteine, lipide i vitamine.
Patent AT-A229994-A (AT)
Inventor: WIESBOECK RAINER DR
IPC: C21C1/02
Filed: 1994-12-09
Abstract: An agent for treating pig or cast iron melts for desulphurisation purposes has 15 to 95 % by weight calcium carbide and/or calcium oxide, the residue being at least one type of ash from biomass incineration such as wood ashes, coarse ashes, fluidised bed ashes, flying ashes or combustion chamber ashes.
Patent BE-879782-A (BE)
IPC: C08G59/68
Filed: 1979-10-31
Abstract: The invention provides powder coatings based on carboxyl terminated polyester, an epoxy compound and a choline compound of the formula  [Y-CH2-CH2N-(-CH3)3]+/n X<n->  in which X is OR or -O-@-R and R is H or a C1-40 group   and X<n-> is an anion. Preferably Y represents OH or a -O-@-R group.   The powder coatings are less prone to yellowing and non-toxic.
Patent BE-899270-A (BE)
Title: Procede de production de dioxyde de manganese synthetise par voie chimique.
Inventor: TANABE I
IPC: H01M4/50
Filed: 1984-03-28
Abstract: Nouveau procédé pour produire du dioxyde de manganèse convenant spécialement pour la fabrication des piles. Le procédé est caractérisé en ce qu'on oxyde du carbonate de manganèse densifié avec de l'oxygène humide ou sec sous une pression totale de 4 à 20 atmosphères (au manomètre) et à une température de 275 à 350 degrés C, le dioxyde de manganèse ainsi obtenu ayant une teneur en MnO2 d'au moins 88% et une teneur en beta-MnO2 n'excédant pas 20%.
Patent BE-900664-A (BE)
Title: Chariot chargeur et analogue, et procede de dechargement pouvant etre realise avec celui-ci.
Inventor: MENGELE D P
IPC: A01D90/04
Filed: 1984-09-24
Abstract: Dans un chariot, dans lequel le produit récolté ramassé sur le sol par un tambour collecteur est amené dans un canal de transport et y est encore transporté dans le volume de chargement du chariot par des organes transporteurs pénétrant périodiquement à travers une paroi racleuse et analogue, telles  que des dents transporteuses, au-dessus de la paroi racleuse (8), sur un arbre à dents (10), est supportée une rangée de dents (11) réalisées en forme de rateau chevauchant la paroi racleuse (8) supérieure, venant en retrait en position primitive avec leur partie chevauchante (11a) dans les fentes de passage de la paroi racleuse, derrière le coté de transport, et qui sont agencées de manière à pouvoir pivoter à travers le canal de transport (3), au moins jusque dans son embouchure (3a), au moyen d'un levier à main (13) attaquant extérieurement l'arbre à dents (10).
Patent BE-905744-A (BE)
Title: Dispositif pour sectionner automatiquement une ceinture de securite a l'expiration d'un delai determine apres une mise sous tension determinee de la ceinture.
IPC: B60R22/32
Filed: 1986-11-13
Abstract: Dispositif 1 destiné soit à rendre pratiquement nulle la résistance à la traction d'une ceinture 3 ou de chaque brin d'un harnais de sécurité associé à un siège de véhicule, soit à sectionner cette ceinture 3 automatiquement, d'une part, lorsque celle-ci à subi une tension déterminée et, d'autre part, après un laps de temps déterminé qui suit cette mise sous tension de la ceinture, ce dispositif étant agencé dans un boitier 2, fixe ou libre, dans lequel passe librement la ceinture 3 ou un brin du harnais.
Patent CA-1049673-A (CA)
Inventor: POCHERT JOHANNES
IPC: C08K5/548
Filed: 1975-01-09
Granted: 1979-02-27
Abstract: ABSTRACT OF THE DISCLOSURE         The present invention provides a silica-containing mixture for improving the adhesion to vulcanizable mixtures of natural or synthetic rubber to reinforcing fillers or underlayers of textile or metallic fabrics after the mixture has been vulcanized thereon, said mixture comprising (A) an active, synthetically produced silica or silicate having a specific surface area according to BET of approximately 50 to 500 sq m per gram and an average primary particle size ranging from approx-imately 5 to 100 nm or a mixture thereof and  comprising at least (B) one component, which forms phenol resin or aminoplast or (C) an least   an   organosilane selected from a bis-alkoxy-silyl-alkyl-oligosulphide having the general formula (I)  q - Alk - Sn - Alk - Z wherein Z represents the groupings                      and          wherein R1 represents an alkyl group containing 1 to 4 carbon atoms or the phenyl radical and R2 represents an alkoxy group containing 1 to 8, a cycloalkoxy group containing 5 to 8 carbon atoms or a straight or branched alkyl-mercapto group containing 1 to 8 carbon atoms and wherein all the symbols R1 and R2 can have the same or a different meaning, -Alk- represents a divalent, straight or branched hydrocarbon radical containing 1 to  18 carbon atoms and n represents a number from 2 to 6, a silane containing mercapto groups and having the general formula (II) Z - Alk - SH wherein Z and Alk have the meaning specified above, or a silane having the general formula (III) Z - Alk - A, wherein Z and Alk have the meaning specified above and A represents the groupings N = C - S -R - S -RO - CS - S -RS - CS - S -R1 - CS - S -, wherein each of R and R1 represent a monovalent organic radical saturated or unsaturated, branched or unbranched, acyclic, cyclic, heterocyclic or heteroaromatic rradical and containing 1 to 15 carbon atoms and 1 to 5 hetero atoms from the group of nitrogen, oxygen and sulphur or both (B) and (C).
Patent CA-1040210-A (CA)
Inventor: BERG RUDOLPH G
IPC: C07C51/25
Filed: 1975-04-24
Granted: 1978-10-10
Abstract: ABSTRACT OF THE DISCLOSURE The preparation of citraconic anhydride by catalytic vapor phase oxidation of methyl butanols and methyl butenols.